Grits-separator.



Patented May15,1917.

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F. E. MILLER.

GRITS SEPARATOR.

APPLICATION FILED 050.14. 1915.

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F- E. MILLER.

GRITS SEPARATOR.

APPLICATION FILED DEC. 14. 1915.

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FOREST E. MILLER, 01? NEWBERRY, SOUTH CAROLINA.

GRITS-SEPARATOR.

Specification of Letters Patent.

Patented May 15, 1917.

Application filed December 14, 1315. Serial No. 66,795.

, State of South Carolina, have invented new and useful Improvements inGrits-Separators, of which the following is a specification.

This invention relates to grits separators for separating grits frombran and meal, and it has for its object to produce a machine of simpleand improved construction, whereby at a single operation two grades ofgrits, coarse and fine, may be separated from the bran and] the meal,thus securingfour products by a single passage of material through themachine.

A' further object of the invention is to produce a machine of the classdescribed of simple and improved construction, by the use of which theseveral grades of-grits will be subjected to independent blasts of airfrom asingle fan for the purpose of eliminating impurities.

Vith these and other ends in view which will readily appear asthe natureof the inwhich will be hereinafter fully described.

and particularly pointed out in the claims.

In the accompanying drawings has been illustrated a simple and preferredform of the invention, it being, however, understood that no limitationis necessarily made to the precise structural details therein exhibited,but that changes, alterations and modifications within the scope of theclaims may be resorted to when desired.

In the drawings,-

Figure l is a side elevation of a machine constructed in accordance withthe inven tion.

Fig. 2 is a top plan view of the same.

Fig. 8 is a longitudinal sectional View taken on the line 33 in Fig. 2.

Fig. 4 is a transverse sectional-view taken on the line 4lin Fig. 1. v

Fig. 5 is a transverse sectional view taken on the line 55 in Fig. 3.

Fig. 6 is a transverse sectional view taken on the line 66 in Fig. 3.

Figs. 7 and 8 are detail views of portions of the coarse and. time gritssieves and related parts. 4

Corresponding parts in the several figures are denoted by likecharacters of reference.

The frame of the improved machine which is provided with legs or cornerposts 16 supports a hopper 17 and a fan casing 18, the latter containingthe rotary fan 19 which is mounted on a shaft :20. The hopper contains acorrugated feed roller 21 mounted on a shaft 22, said corrugated rolleroperating in conjunction with the feed gate 23 to regulate the passageof material from the hopper tothe shoe 2%. The latter consists of asuitable casing which is supported for reciprocation, and it is actuatedby means of a lever 25, one end of which is connected by a pitman 26with a crank 27 on a main driven shaft 28, the latter having a pulley 29whereby it is driven from a suitable source of power, it being. obviousthat, if desired, the shaft may be manually rotated. The driven shaft 28has a pulley 30 from which a belt or band 31 is trained over pulleys 32,33 on the shafts, and 22, respectively, thereby transmitting motion tothe fan and to the feed roller, it being evident that pulleys of properdimensions will be used to secure the desired relative speed of theparts. For the purpose of securing the feed gate in adjusted positionany convenient means, such as a bolt 23 carried by a bracket 24: andengaging a slot in the feed gate may be employed;

The shoe 24 contains a bran sieve 84, a coarse grits sieve 35 and a finegrits sieve 36, arranged inthe-order named, the bran sieve beinguppermost. The shoe has an outlet for the meal sifting through the linegrits sieve, said outletv consisting of a spout 37 which is slidablyconnected withthe shoe from which it extends laterally through anopening in the side of the casing, a flanged guide member 37 beingprovided to support the said spout. The latter, as seen in Fig. 5, isprovided with a hook portion 38 adapted to engage a pin 39 lying in thepath thereof to limit the outward movement of the spout. By pushing thespout inward within the shoe the latter may be raised clear of the frameor outer casing whenever needed in order to afford access to underlyingparts.

Extending forwardly from the fan casing and communicating with theoutlet of said casing is a wind trunk 38 having a longi tudinalpartition 39,. whereby separate compartments 40 and tl are formed, eachof said compartments being provided with an outlet designated,respectively, by 42 and 43. The bran sieve 34: projects beyond the tailend or discharge end of the shoe 24, and it overhangs the tail end ofthe wind trunk so that bran discharged over the sieve 34 will be blownclear of the machine. The sieves 85 and 36 are provided, respectively,with deflectors 44 and 45, whereby material discharged over said sieveswill be con- .veyed to hoppers or funnels 46, 47 communicating,respectively, with the compartments L0, 41 of the wind trunk, saidhoppers being positioned directly above the outlets 42, 43. The materialdischarged over the sieves 35, 36 v.will thus be subjected to the blastof the fan before reaching the outlets 42, as, and the coarse and finegrits will thus be cleaned from dust, fine bran and other impurities,the impurities mingling with the bran as the latter is blown from themachine. The funnels 4-76, -17 are each provided with a deflecting lip4E8 depending partly within the wind trunk, as clearly seen in Figs. 3and 6, and over which the grits will be partly guided before subjectedto the action of the blast.

It will be seen that by the improved machine, bya single operation,crushed corn may be divided into four distinct commercial products,namely, coarse grits, fine grits, meal and bran, the grits beingthoroughly cleansed from all impurities. The machine is simple inconstruction, economical in operation and thoroughly efficient for thepur poses for which it is provided.

Having thus described the invention, what is claimed as new, is

1. In a grits separator, a trunk having a longitudinal verticalpartition whereby com partments are formed lying adjacent to each otherwith their bottom portions in the same plane, each compartment having aninlet in its top portion and an outlet in its bottom portion, theoutlets being in vertical registry with the inlets and each inlet havinga funnel, a shaking shoe having a bran sieve overhanging the wind trunkto discharge material in the path of the air current issuing therefrom,and sieves in the shaking shoe havingdeflectors to discharge materialfrom the separate sieves to separate inlet funnels.

2. In a grits separator, a trunk having a longitudinal verticalpartition whereby compartments are formed lying adjacent to each otherwith their bottom portions in the same plane, each compartment having aninlet in its top portion and an outlet in its bottom portion, theoutlets being in vertical registry with the inlets and each inlet havinga funnel, a shaking shoe having a bran sieve overhanging the wind trunkto discharge material in the path of the air current issuing therefrom,and sieves in the shaking shoe having deflectors to discharge materialfrom the separate sieves to separate inlet funnels, said shaking shoebeing provided with a meal outlet in the bottom intermediate the endsthereof.

3. In a grits separator, a wind trunk having a longitudinal verticalpartition producing separate compartments, a shaking shoe having a bransieve overhanging the discharge end of the wind trunk, sieves in theshaking shoe for the production of prod ucts of several grades, andmeans for con-' ducting said products through the wind trunk in the pathof the wind currents issuing through the compartments thereof.

a. In a device of the class described, a wind trunk having alongitudinal vertical partition producing separate compartments, ashaking shoe having a bran sieve overhanging the discharge end of thetrunk, sieves in the shaking shoe for the production of several grades,hoppers for conduct ing said products through the wind trunk in the pathof the air currents issuing through the compartments thereof, and lipsextending from said hoppers within the compartment of the wind trunk.

In testimony whereof I affix my signature in presence of two witnesses.

FOREST E. MILLER. lVitnesses H. C. IIOLLOWAY, B. V. CHAPMAN.

Copies of this patent may be obtained for five cents each, by addressingthe .Gommissioner of Patents. Washington, D. 0.

